{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2050385",
    "entityType": "User",
    "nonce": "0x9b97d520d80598a037c3480a5a958976142b2556d32cf48f625c7a68f3341a52",
    "signature": "0x51b3e5b92b94ad4ceb1a2ac0e9a05f08c4fae7e45dcdb9f081e584b2151b32e12a0bf46953a9d536b2c78bea6c90858fdfae554d88230ab51f98115e4f2222801b",
    "signer": "0x37aDe639b59aC9A76fA0bce738f3d69Cb9e1947E",
    "userId": "881659551"
  }
}